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Can we specify data types in MongoDB for columns? 2 Answers. Actually MongoDB is a schemaless database because of MongoDB is a JSON-style data store.…

What is the best software design pattern? Factory Design Pattern One of the most popular design patterns used by software developers is a factory method.…

How do I delete all data from my Samsung Galaxy S4? Ensure the device is powered off. Press and hold the Volume Up and Power…

How do you fix Wi-Fi that requires login? How to fix Wi-Fi authentication problems on Android Toggle Airplane mode. Forget and reconnect to the Wi-Fi…

How do I give an app permission to use mobile data? Change app permissions On your phone, open the Settings app. Tap Apps & notifications.…

How do you change audio to 48 kHz? Setting 48 kHz in Windows 10 Right-click the Speaker icon in your system tray and click Playback…

What is SELV Pelv and Felv? Use of SELV (Safety Extra-Low Voltage) Use of PELV (Protection by Extra Low Voltage) FELV system (Functional Extra-Low Voltage)…

What is record in JSON? Records are collections of fields and each field value is accessed by a key. Converting from one type to another…

How does an ESC beep? The ESC will emit three rapid tones (“ 1 2 3”) indicating that all is well, followed by two short…

Why is my particle hair not showing as expected in cycles? The hair is manifestly rendering, but has pretty fine geometry. I can’t find anything…